Video Doorbell in Winter Weather

I am considering the purchase of a video doorbell.  While doing my research, I read a review that the Simplisafe Video Doorbell does not work if the temperature is below 14 degrees or it gets wet.  Is this accurate?  I don't understand why Simplisafe would make an outdoor product that was not at least weather-resistant.  Half the country will be experiencing temperatures below 14 degrees this winter, so, if true, that would be mind-boggling.  Thank you for any information.